Durability study of Pt3Ni1 catalysts as cathode in PEM fuel cells

Héctor R. Colón-Mercado; Hansung Kim; Branko N. Popov

doi:10.1016/j.elecom.2004.05.028

Durability study of Pt₃Ni₁ catalysts as cathode in PEM fuel cells

Héctor R. Colón-Mercado, Hansung Kim, Branko N. Popov

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

213 Citations (Scopus)

Abstract

The catalytic, corrosion and sintering properties of Pt/C and Pt ₃Ni₁/C catalysts are evaluated using an accelerated durability test (ADT). The catalytic activity and dissolution rate of Ni from a Pt₃Ni₁/C alloy catalyst are estimated in the same time domain. A strong correlation exists between the amount of Ni dissolved and the oxygen reduction activity of the catalyst. To compare the sintering resistance of both the Pt/C and Pt₃Ni₁/C catalyst, the particle size of the catalysts before and after the ADT is measured by using transmission electron microscopy. The Pt₃Ni₁/C alloy, due to anchor effects in its structure, shows high sintering resistance.

Original language	English
Pages (from-to)	795-799
Number of pages	5
Journal	Electrochemistry Communications
Volume	6
Issue number	8
DOIs	https://doi.org/10.1016/j.elecom.2004.05.028
Publication status	Published - 2004 Aug

Bibliographical note

Funding Information:
Acknowledgements. We thank Ms. Ulla Kiiski and Ms. Asja Mile-tic for skillful technical assistance and Ms. Marja-Leena Rissanen for skilled secretarial help. M.S.-B. was a recipient of a short-term fellowship from the Programme on Developmental Biology of the European Science Foundation. This work was supported by the Medical Research Council of the Academy of Finland, the Uni-

All Science Journal Classification (ASJC) codes

Electrochemistry

Access to Document

10.1016/j.elecom.2004.05.028

Cite this

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title = "Durability study of Pt3Ni1 catalysts as cathode in PEM fuel cells",

abstract = "The catalytic, corrosion and sintering properties of Pt/C and Pt 3Ni1/C catalysts are evaluated using an accelerated durability test (ADT). The catalytic activity and dissolution rate of Ni from a Pt3Ni1/C alloy catalyst are estimated in the same time domain. A strong correlation exists between the amount of Ni dissolved and the oxygen reduction activity of the catalyst. To compare the sintering resistance of both the Pt/C and Pt3Ni1/C catalyst, the particle size of the catalysts before and after the ADT is measured by using transmission electron microscopy. The Pt3Ni1/C alloy, due to anchor effects in its structure, shows high sintering resistance.",

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